83 lines
2.4 KiB
C
83 lines
2.4 KiB
C
|
/* $NetBSD: eprintf.c,v 1.1.1.1 1996/01/07 21:50:49 leo Exp $ */
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Copyright (c) 1995 Waldi Ravens.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms, with or without
|
||
|
|
* modification, are permitted provided that the following conditions
|
||
|
|
* are met:
|
||
|
|
* 1. Redistributions of source code must retain the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer.
|
||
|
|
* 2. Redistributions in binary form must reproduce the above copyright
|
||
|
|
* notice, this list of conditions and the following disclaimer in the
|
||
|
|
* documentation and/or other materials provided with the distribution.
|
||
|
|
* 3. All advertising materials mentioning features or use of this software
|
||
|
|
* must display the following acknowledgement:
|
||
|
|
* This product includes software developed by Waldi Ravens.
|
||
|
|
* 4. The name of the author may not be used to endorse or promote products
|
||
|
|
* derived from this software without specific prior written permission.
|
||
|
|
*
|
||
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
|
||
|
|
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
|
||
|
|
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
|
||
|
|
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
|
||
|
|
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
|
||
|
|
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
|
||
|
|
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
|
||
|
|
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
|
||
|
|
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
|
||
|
|
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <stdarg.h>
|
||
|
|
#include <unistd.h>
|
||
|
|
#include "libtos.h"
|
||
|
|
|
||
|
|
static int output_redirected = 0;
|
||
|
|
|
||
|
|
void
|
||
|
|
redirect_output(fn)
|
||
|
|
char *fn;
|
||
|
|
{
|
||
|
|
int fd;
|
||
|
|
|
||
|
|
fd = creat(fn, 0666);
|
||
|
|
if (fd < 0 || dup2(fd, STDOUT_FILENO) < 0)
|
||
|
|
fatal(errno, "%s", fn);
|
||
|
|
output_redirected = 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Print output to stderr. When output is redirected,
|
||
|
|
* also write it to stdout.
|
||
|
|
*/
|
||
|
|
int
|
||
|
|
eprintf(frm)
|
||
|
|
char *frm;
|
||
|
|
{
|
||
|
|
va_list args;
|
||
|
|
int rv;
|
||
|
|
|
||
|
|
va_start(args, frm);
|
||
|
|
rv = veprintf(frm, args);
|
||
|
|
va_end(args);
|
||
|
|
return(rv);
|
||
|
|
}
|
||
|
|
|
||
|
|
int
|
||
|
|
veprintf(frm, args)
|
||
|
|
char *frm;
|
||
|
|
va_list args;
|
||
|
|
{
|
||
|
|
int rv;
|
||
|
|
|
||
|
|
rv = vfprintf(stderr, frm, args);
|
||
|
|
if (output_redirected)
|
||
|
|
vfprintf(stdout, frm, args);
|
||
|
|
return(rv);
|
||
|
|
}
|